cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A097425 a(1) = 500, then a(n) is the concatenation of the roman numerals (I, V, X, L, C, D, M) visible in a(n-1) written in English.

Table of values

n a(n)
1 500
2 15500500
3 1510001505011550050050015500500

List of values

[500, 15500500, 1510001505011550050050015500500]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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